I fundamentally, emphatically disagree with this. I think it's a weird rewriting of history to think that "Civilization was built by trying to stop wealth transfers within powerful families".
Do I think a lot of wealth is trapped within a few families, and that might be a problem? Sure. Do I think that the ability to destroy generational wealth transfers is what made Civilization? No, and I think it's absolutely crazy to think so. It ignores every great family in history that did everything from win wars to build railroads.
Civilization experiments with policy. At the extreme, there is a push towards consolidation and monopolies and this is counterbalanced by the rule of a unhappy mob. This causes policy to shift over time.
Wealth transfer is income, so progressive income tax without exempting wealth transfer from income tax would seem the most direct solution.
- Warren Buffett
I think progressive wealth transfer taxes are a perfectly good middle ground.